Added ostream operator for WordToken.
Fix of a critical bug. Style improvements.

Corrected several cases where derived containers would call their methods instead of delegating to the parents, since
the namespaces were improperly qualified.
Added operator for conversion of Sequence to vector<int> (mainly for testing at this point).
Added operator for conversion of WordToken to string_impl, eliminating the need of an ostream operator.
Changes related to tests.

Changed CMakeLists.txt to configure correct string library for tests.
Reactivated test file path configures.
Initializer lists for expected data in align_unittest.cpp
text_unittest.cpp works with the artificial files now.
More verbose cite for bisim_test.cpp
Removed redundant dictionary entries.
Made tests properly qualify namespace.
Style related changes.

Namespace end properly closed with comments. Added conversion operator to Hypothesis. SequenceContainer renamed to
AlignMake to reflect its changed responsibility.
Removed const_cast from Sequence::merge.

Also removed printString, which has been replaced by an ostream operator.